Can a body have rotational symmetry of order $ 1$ with angle of rotation $18^{\circ}$? Order would be —

Question

Can a body have rotational symmetry of order $> 1$ with angle of rotation $18^{\circ}$? Order would be —

Accepted Answer

$20$

Answer

$5$

Answer

$10$

Answer

impossible

Can a body have rotational symmetry of order >1> 1>1 with angle of rotation 18∘18^{\circ}18∘? Order would be —